Audemars Piguet Tourbillon 25643BA

Brand Audemars Piguet, Le Brassus (Vallée de Joux) Model ‘Tourbillon Automatique’, numbered edition, No. 184 Retailed by / made for - Year circa 1990 Reference 25643 BA Movement No. 184 Calibre 2870, self-winding, 32 jewels Case No. 184 Material/s yellow gold (18-carat) Bracelet leather strap Buckle yellow gold (18-carat) AP double folding deployant clasp Dimensions 35.2 x 28.7 mm. Thickness 5.5 mm. Weight --.- gr. (approx.) Signature dial, case and movement Accessories original fitted box and outer box, original booklet, repair invoice (AP North America, Greenwich, CT, dated 12/08/2015) Audemars Piguet Ref. 25643 BA, self-winding, one-minute tourbillon regulator; ‘Tourbillon Automatique’, numbered edition; yellow gold (18-carat) -- Yellow gold (18-carat), self-winding, vertical elliptical-shaped, extra-thin, gentleman’s wristwatch, with back time setting and a one-minute tourbillon regulator. -- Case: two-piece, polished and satin-finished, rounded bezel, snap-on case-back; polished crown. Dial: gold, two-tone with sunray motif, with yellow gold applied dots; blued steel ‘Feuille’ (leaf-shaped) hands. Movement: calibre 2870 (32.8 x 27.8 mm.), self-winding, 32 jewels, inside case-back as main-plate, extra-thin, going barrel, lateral lever escapement, Glucydur screw-balance, self-compensating flat hairspring, titanium tourbillon carriage and platinum-iridium pendulum oscillating mass.